Cash, cash equivalents and investments:

The Company considers all highly liquid investments with an original maturity of three months or less at the date of acquisition to be cash equivalents. From time to time, the Company's cash account balances exceed the balances as covered by the Federal Deposit Insurance System. The Company has never suffered a loss due to such excess balances.

The Company invests excess cash from time to time in highly-liquid debt and equity investments of highly-rated entities which are classified as trading securities. The purpose of the investments is to fund research and development, product development, U. S. Food and Drug Administration ("FDA") clearance-related activities and general corporate purposes. Such amounts are recorded at market values using Level 1 inputs in determining fair value and are classified as current, as the Company does not intend to hold the investments beyond twelve months. Investment securities classified as trading are those securities that are bought and held principally for the purpose of selling them in the near term, with the objective of preserving principal and generating profits. These securities are reported at fair value with unrealized gains and losses reported as an element of other (expense) income in current period earnings. The Company's Board of Directors has approved an investment policy covering the investment parameters to be followed with the primary goals being the safety of principal amounts and maintaining liquidity of the fund . The policy provides for minimum investment rating requirements as well as limitations on investment duration and concentrations. Based upon market conditions, the investment guidelines have been tightened to increase the minimum acceptable investment ratings required for investments and shorten the maximum investment term. As of June 30, 2015, 20% of the investment portfolio was in cash and cash equivalents, which is presented as such on the accompanying balance sheet, and the remaining funds were invested in short-term marketable securities with none individually representing a material amount of the portfolio and none with maturities past June 30, 2016. To date, the Company's cumulative realized market loss from the investments has not been significant. For the six months ended June 30, 2015 and 2014, there was approximately $16,000 and $12,000, respectively, in management fee expenses.

Revenue recognition and accounts receivable:

We recognize sales of goods under the provisions of ASC 605 and the U.S. Securities and Exchange Commission (“SEC”) Staff Accounting Bulletin (“SAB”) 104, Revenue Recognition. Future revenue is expected to be generated primarily from the sale of products. Product revenue primarily consists of sales of instrumentation and consumables.

Revenue is recognized when the following four basic criteria have been met: (i) persuasive evidence of an arrangement exists; (ii) delivery has occurred and risk of loss has passed; (iii) the seller's price to the buyer is fixed or determinable; and (iv) collectability is reasonably assured.

In international markets, the Company sells its products to distributors or re-sellers, who subsequently resell the products to hospitals. The Company has an agreement with each such distributor which provides that title and risk of loss pass to the distributor upon shipment of the products, FOB to the distributor. Revenue is recognized upon shipment of products to the distributor as the products are shipped based on FOB shipping point terms.

Revenues are recorded less a reserve for estimated product returns and allowances which to date has not been significant. Determination of the reserve for estimated product returns and allowances is based on management's analyses and judgments regarding certain conditions. Should future changes in conditions prove management's conclusions and judgments on previous analyses to be incorrect, revenue recognized for any reporting period could be adversely affected.

The Company extends credit to customers generally without requiring collateral. As of June 30, 2015, accounts receivable of $24,000, net of a $1,600 allowance for uncollectible accounts, has been included with prepaid expenses and other current assets on the accompanying balance sheet. At June 30, 2015, two customers accounted for 75% and 25% of total accounts receivable, respectively. During the six months ended June 30, 2015, three European-based customers accounted for the total net sales, each representing 58%, 28% and 14%, respectively. At December 31, 2014, the Company did not have any accounts receivable. During the six months ended June 30, 2014, two customers individually accounted for the Company's sales for the period, representing 37% and 63%, respectively. 

The Company monitors its exposure for credit losses and maintains allowances for anticipated losses. The Company records an allowance for doubtful accounts when it is probable that the accounts receivable balance will not be collected. When estimating the allowance, the Company takes into consideration such factors as its day-to-day knowledge of the financial position of specific clients, the industry and size of its clients. A financial decline of any one of the Company's large clients could have an adverse and material effect on the collectability of receivables and thus the adequacy of the allowance for doubtful accounts receivable. Increases in the allowance are recorded as charges to bad debt expense and are reflected in other operating expenses in the Company's statements of operations. Write-offs of uncollectible accounts are charged against the allowance.

Income (loss) per share:

ASC 260, Earnings Per Share, requires dual presentation of basic and diluted earnings per share ("EPS") with a reconciliation of the numerator and denominator of the basic EPS computation to the numerator and denominator of the diluted EPS computation. Basic EPS excludes dilution. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity.

Basic net earnings (loss) per share includes no dilution and is computed by dividing net earnings (loss) available to shareholders by the weighted average number of common shares outstanding for the period. Diluted net earnings (loss) per share reflect the potential dilution of securities that could share in the Company's earnings (loss). The effect of the inclusion of the dilutive shares would have resulted in a decrease in loss per share. Accordingly, the weighted average shares outstanding have not been adjusted for dilutive shares. Outstanding stock options and warrants are not considered in the calculation, as the impact of the potential common shares (totaling approximately 6.2 million shares and 5.3 million shares for each of the three and six month periods ended June 30, 2015 and 2014, respectively) would be to decrease the net loss per share.